Find the area of the shaded part in the figure below

The area of a triangle is found using the formula 1/2 x base x height.

The larger triangle has a base of 20cm and a height of 18cm.

The area would be 1/2 x 20 x 18 = 180 square cm.

The white triangle has a base of 20cm and a height of 8cm.

The area would be 1/2 x 20 x 8 = 80 square cm.

The area of the shaded portion would be the larger triangle minus the smaller triangle:

180 - 80 = 100 square cm.

the amount you'd have after the work is $1.55

step-by-step explanation:

you subtract 95% from $31.